* {
	margin: 0;
	padding: 0;
}
ul {
	list-style: none;
}
a {
	text-decoration: none;
}
.tc {
	text-align: center;
}
/* 登陆和注册 */
.form {
	display: flex;
	justify-content: center;
	align-items: center;
	height: 100vh;
}
.form label {
	display: block;
	margin: 10px 0;
}
.form label span {
	display: inline-block;
	width: 80px;
}
.form button {
	width: 49%;
}
